Due to the position of the key, and not being able to move the roller (as I could not remove the bearing), it was difficult to get to the key properly. I first started drilling out the key in the hope that I could break the key. It did not break. So I ended up using a Dremel tool to grind the woodruff key flat with the shaft. That enabled me to remove the remaining half of the roller, and eventually (with considerable effort) to remove the bearing. I then went back with the Dremel and ground out the remaining part of the key. The photo shows part of the key that I extracted and the keyway. It looks as though there is not too much damage to the shaft. Just need to order new key.
Regards Foles
Celebrating 50 years of mowing lawns with my Scott Bonnar 45s
